Is there an "easy" way to repeat geo for this practice project?
To make a set of boolean &quot;cutter objects&quot; that you can copy for the rest of your sword, first, make your base cutter object (I used a cylinder for the example), then use an Array Modifier to make multiple instances of the cutter object, a Curve Modifier to curve the array, and a (scaled) Empty, used as an object offset to scale the array along its length: